Date of Award

Spring 5-2021

Author's School

McKelvey School of Engineering

Author's Department

Mechanical Engineering & Materials Science

Degree Name

Master of Science (MS)

Degree Type



In this work, the Peters-Seidel finite-state model is expanded to calculate the coupled inflow and rotor dynamics of tandem rotor configurations. This establishes the foundation for a more complete multi-rotor, dynamic inflow model with finite-state methods. The derivation presented in this work is for the general case of two rotors in the same plane, overlapping and separated to varying degrees. It is the purpose of this work to study the unique and interesting dynamics and characteristics of various tandem systems heretofore not studied in a dynamic system. Moreover, it is the goal of this work to investigate how these systems can be modeled in real time for applications to flight simulators. In order to study the dynamic behavior of these systems, the present work will introduce a dynamic inflow model that computes the flow on and above each rotor disk for two interacting rotors. The model must be constructed as such in order to evaluate the effect of each rotor’s inflow on the other. Moreover, this will be the basis for subsequent, generalized multi-rotor dynamic inflow models that can describe the behavior of rotor configurations with both lateral and vertical difference. In this work, the dynamic inflow models of the two rotors are of simple blade flapping, with no in plane motion or torsion, for a finite number of rotor blades in axial flow.


English (en)


Dr. David A. Peters

Committee Members

Dr. David A. Peters Dr. Swami Karunamoorthy Dr. Shankar Sastry